The sky has fallen on the Giants and this woebegone season, leaving all involved with the franchise to wonder what the hell happened.

It is over now. The schedule says there are 11 games remaining, on into October and then November and clear through the last day of December, New Year’s Eve. The ball already has dropped on the Giants. On a gray Sunday, injury and insult met at the corner of doom and despair and turned MetLife Stadium into an open-air morgue.

The sight of Odell Beckham Jr. in tears, shielding his pained face as he was carted off in a 27-22 loss to the Chargers, is the lasting image of what 2017 has wrought for a team that not long ago had visions of glory, and now is left with only gory. With four minutes remaining in a game the Giants led 22-20, Beckham suffered a fractured left ankle, an injury that will end his season. This shook the Giants.

“At the end of the game, when you see your best player in pain, it can be a tough situation,’’ Eli Manning said.

On the next play, Melvin Ingram tore through the Giants offensive line to sack Manning, giving him the complete rag-doll treatment, hurling the 36-year-old quarterback to the turf, causing a fumble that Ingram himself recovered on the Giants 11-yard line.

Anyone following this morbid Giants script knows what happened next, as they dropped to a ghastly and deserved 0-5 record with a loss to the Chargers, a team that arrived in town towing a record of 0-4.

The Chargers got their winning points when Philip Rivers tossed to running back Melvin Gordon, who easily out-raced overmatched linebacker Keenan Robinson into the end zone on a 10-yard scoring play with 2:58 left to play.

With a trip to Denver and then a return home to face the Seahawks, the Giants are staring at 0-7 before they part ways for their bye week, moving on without Beckham and most likely their other key offensive components.

Beckham was one of four receivers to leave the field and not return. Sterling Shepard and Brandon Marshall both went out in the second quarter with ankle injuries. Dwayne Harris suffered a fractured foot early in the third quarter.

“I mean, it significantly altered the game,’’ coach Ben McAdoo said. “We had one receiver left at the end of the ballgame.’’

Beckham’s 48-yard touchdown catch early in the fourth quarter had put the Giants ahead 22-17 — the third consecutive game they took a lead in the fourth quarter. For their final drive, the Giants took the field with 2:53 remaining and had tight ends Evan Engram, Rhett Ellison and Jerell Adams in the huddle, along with Roger Lewis, the only receiver left standing.

“To be honest, it didn’t hit me and then I was like wait, why do we have three tight ends out here?’’ offensive lineman Justin Pugh said. “Then, I realized that Dwayne went down, Shep went down, Brandon went down, Odell went down. It’s crazy.’’

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The battered Giants actually crossed into Chargers territory, but a penalty on right tackle Bobby Hart and more heat on Manning from Ingram and Joey Bosa (two sacks apiece) led to Manning’s 36th and final pass, tipped at the line of scrimmage and intercepted by safety Tre Boston.

“It’s a tough situation when you lose four receivers in a game,’’ Manning said. “I thought we did the best we could. We had a scoring drive with a couple of them out. It’s not the ideal situation.’’

The Giants finally scored their first points in the first quarter, and they came via the defense when Chargers center Spencer Pulley sent a shotgun snap before Rivers was ready. All Rivers could do was chase the ball down and shovel it out of the end zone for a safety and a 2-0 Giants lead. A 23-yard run by Orleans Darkwa made it 9-0 and the Giants had their largest lead of the season.

“In my mind there was never a doubt that we were going to win this game,’’ Pugh said. “It’s tough.’’

Beckham was hurt when he leaped attempting to haul in a high throw from Manning and came down awkwardly on the left ankle that was sprained earlier this season. The ankle got bent under cornerback Casey Hayward and Chargers defenders immediately signaled for medical help from the Giants sideline.

“He went down and I knew it wasn’t good,’’ Engram said. “I was on the other side, so I just dropped and prayed for him. He was upset. He was in pain. It was really tough after that play, right after. Yeah, I mean, it’s tough, we lost a soldier, we lost our brother. It’s tough, but the game there, had to try and keep winning.’’